no output in terminal with mbed serial (Window 10)

I am using Window 10. When connecting the LS1043ARDB mbed Serial Port (COM7) - which can be seen by TeraTerm. I set baud rate to 1152000,8, no parity, 1 stop bit and none flow control (normal setting) but I do not see any output to the terminal. I did also try with Putty with the same setting and the result is the same (no output). I tried the LS1043ARDB with my Ubuntu machine with minicom and I can see the uboot output - This is to make sure the LS1043ARDB is functional - Any idea why I do not see output in Window 10